LOGAN SYSTEM 860DL 12-Position Automated Dissolution Sampling System

Overview

The LOGAN SYSTEM 860DL is a fully automated, modular 12-position online dissolution sampling system engineered for high-reproducibility pharmaceutical dissolution testing in compliance with USP , , , and ICH Q5A guidelines. It integrates core dissolution mechanics—precisely controlled paddle or basket rotation within thermostatically stabilized vessels—with real-time, programmable sampling, filtration, and fluid handling. The system operates on the principle of sink-condition dissolution kinetics, where drug release from solid dosage forms (e.g., tablets, capsules, suspensions, transdermal patches, and hydrogels) is quantified via timed sampling and subsequent analytical detection (e.g., UV-Vis spectrophotometry, HPLC, or fiber-optic probes). Its architecture supports both regulatory submission-grade batch testing and exploratory formulation development, delivering traceable, time-stamped, and tamper-evident data throughout the entire test lifecycle.

Key Features

• Simultaneous operation across 12 dissolution vessels with independent temperature monitoring—each vessel equipped with a dedicated PT100 sensor for real-time thermal validation.
• High-precision peristaltic injection pumps (SYP-12L, 10 mL capacity) enabling volumetric accuracy of ±0.5% across 1–10 mL sample volumes, minimizing carryover and ensuring consistent withdrawal kinetics.
• Dual-stage inline filtration (0.45 µm + 0.22 µm) integrated into each sampling path to prevent particulate interference in downstream analysis.
• Automated media replenishment (re-fill) and temperature-matched replacement fluid delivery to maintain sink conditions without manual intervention.
• Hermetically sealed dual-lid configuration for each dissolution cup, reducing solvent evaporation to <0.5 mL/h per vessel under standard operating conditions (37 °C, 100 rpm).
• Modular expansion capability: supports optional add-ons including flow-through cell (USP Apparatus 4), rotating cylinder (Apparatus 3), paddle-over-disc (Apparatus 5), and reciprocating holder (Apparatus 6) configurations via interchangeable hardware kits.
• Integrated high-resolution imaging module (optional) for synchronized video capture of tablet erosion, capsule disintegration, and gel matrix hydration dynamics during dissolution.

Sample Compatibility & Compliance

The SYSTEM 860DL accommodates a broad spectrum of dosage forms—including immediate- and extended-release tablets, hard/soft gelatin capsules, orally disintegrating tablets (ODTs), mucoadhesive films, transdermal patches, and semi-solid gels—across all USP-approved apparatus types. All mechanical tolerances (paddle wobble ≤0.5 mm, basket wobble ≤1.0 mm) meet or exceed USP mechanical calibration requirements. The system’s embedded firmware enforces electronic signatures, immutable audit trails, and three-tier user permission levels (Administrator, Supervisor, Operator), satisfying FDA 21 CFR Part 11, EU Annex 11, and ISO/IEC 17025 documentation integrity standards. Full GLP and GMP audit readiness is ensured through timestamped event logs, parameter change history, and exportable raw data in .csv and .xml formats compliant with laboratory information management systems (LIMS).

Software & Data Management

Controlled by the DSC-800 system controller, the SYSTEM 860DL runs LOGAN Dissolution Suite v5.x—a validated Windows-based application supporting method creation, schedule programming, real-time graphing, and automated pass/fail evaluation against pre-defined acceptance criteria (e.g., Q=80% in 30 min). The software includes built-in calculation modules for deconvolution analysis, similarity factor (f2) computation, and dissolution profile comparison per FDA guidance. Data exports support direct integration with enterprise chromatography data systems (CDS), UV spectrometer APIs, and cloud-based analytics platforms. Remote monitoring is enabled via secure HTTPS web interface or dedicated iOS/Android app—allowing authenticated users to view live vessel temperatures, pump status, sampling progress, and alarm events without compromising network security protocols.

Applications

• Generic drug bioequivalence (BE) studies requiring comparative dissolution profiling under multiple pH conditions (e.g., gastric vs. intestinal media).
• Formulation robustness assessment during preclinical development, including excipient interaction screening and stability-indicating dissolution method qualification.
• Quality-by-Design (QbD) workflows integrating dissolution data with multivariate statistical modeling (e.g., PCA, PLS regression) to identify critical material attributes (CMAs) and process parameters (CPPs).
• Permeation-dissolution coupling studies using integrated side-by-side diffusion cells or parallel artificial membrane permeability assays (PAMPA) to evaluate dissolution-permeation interdependence.
• Regulatory submissions to FDA, EMA, PMDA, and NMPA requiring full traceability, electronic records, and ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data integrity.

FAQ

Does the SYSTEM 860DL support USP Apparatus 4 (flow-through cell)?

Yes—via optional FTD-12 flow-through cell module, compatible with 12.5 mm and 22.6 mm diameter cells and programmable flow rates from 1–16 mL/min.
Can temperature be calibrated per vessel independently?

Each vessel is fitted with a dedicated PT100 probe; calibration offsets can be applied individually via the DSC-800 controller’s calibration utility.
Is the system compatible with third-party HPLC autosamplers?

Yes—the SCR-DL fraction collector outputs standardized 12 × 10 mL vials with ANSI/SLAS footprint, enabling direct robotic arm integration with Agilent, Waters, and Thermo Fisher autosamplers.
What data security protocols are implemented for remote access?

All remote sessions use TLS 1.2+ encryption, mandatory two-factor authentication (2FA), and session timeout after 15 minutes of inactivity.
How is carryover mitigated during sequential sampling?

The SYP-12L pump includes an automatic rinse cycle (3× volume of tubing path) with air purge between samples, validated to reduce residual carryover to <0.1%.